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8ca151b5 JB |
1 | /****************************************************************************** |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
fa7878e7 AO |
8 | * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. |
9 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
854c5705 | 10 | * Copyright(c) 2016 Intel Deutschland GmbH |
8ca151b5 JB |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of version 2 of the GNU General Public License as | |
14 | * published by the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
24 | * USA | |
25 | * | |
26 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 27 | * in the file called COPYING. |
8ca151b5 JB |
28 | * |
29 | * Contact Information: | |
cb2f8277 | 30 | * Intel Linux Wireless <linuxwifi@intel.com> |
8ca151b5 JB |
31 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
32 | * | |
33 | * BSD LICENSE | |
34 | * | |
fa7878e7 AO |
35 | * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. |
36 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
854c5705 | 37 | * Copyright(c) 2016 Intel Deutschland GmbH |
8ca151b5 JB |
38 | * All rights reserved. |
39 | * | |
40 | * Redistribution and use in source and binary forms, with or without | |
41 | * modification, are permitted provided that the following conditions | |
42 | * are met: | |
43 | * | |
44 | * * Redistributions of source code must retain the above copyright | |
45 | * notice, this list of conditions and the following disclaimer. | |
46 | * * Redistributions in binary form must reproduce the above copyright | |
47 | * notice, this list of conditions and the following disclaimer in | |
48 | * the documentation and/or other materials provided with the | |
49 | * distribution. | |
50 | * * Neither the name Intel Corporation nor the names of its | |
51 | * contributors may be used to endorse or promote products derived | |
52 | * from this software without specific prior written permission. | |
53 | * | |
54 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
55 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
56 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
57 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
58 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
59 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
60 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
61 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
62 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
63 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
64 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
65 | * | |
66 | *****************************************************************************/ | |
67 | #include <net/mac80211.h> | |
68 | ||
69 | #include "mvm.h" | |
70 | #include "sta.h" | |
9ee718aa | 71 | #include "rs.h" |
8ca151b5 | 72 | |
854c5705 SS |
73 | /* |
74 | * New version of ADD_STA_sta command added new fields at the end of the | |
75 | * structure, so sending the size of the relevant API's structure is enough to | |
76 | * support both API versions. | |
77 | */ | |
78 | static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) | |
79 | { | |
80 | return iwl_mvm_has_new_rx_api(mvm) ? | |
81 | sizeof(struct iwl_mvm_add_sta_cmd) : | |
82 | sizeof(struct iwl_mvm_add_sta_cmd_v7); | |
83 | } | |
84 | ||
b92e661b EP |
85 | static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, |
86 | enum nl80211_iftype iftype) | |
8ca151b5 JB |
87 | { |
88 | int sta_id; | |
b92e661b | 89 | u32 reserved_ids = 0; |
8ca151b5 | 90 | |
b92e661b | 91 | BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32); |
8ca151b5 JB |
92 | WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); |
93 | ||
94 | lockdep_assert_held(&mvm->mutex); | |
95 | ||
b92e661b EP |
96 | /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ |
97 | if (iftype != NL80211_IFTYPE_STATION) | |
98 | reserved_ids = BIT(0); | |
99 | ||
8ca151b5 | 100 | /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ |
b92e661b EP |
101 | for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++) { |
102 | if (BIT(sta_id) & reserved_ids) | |
103 | continue; | |
104 | ||
8ca151b5 JB |
105 | if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], |
106 | lockdep_is_held(&mvm->mutex))) | |
107 | return sta_id; | |
b92e661b | 108 | } |
8ca151b5 JB |
109 | return IWL_MVM_STATION_COUNT; |
110 | } | |
111 | ||
7a453973 JB |
112 | /* send station add/update command to firmware */ |
113 | int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
114 | bool update) | |
8ca151b5 | 115 | { |
9d8ce6af | 116 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
4b8265ab EG |
117 | struct iwl_mvm_add_sta_cmd add_sta_cmd = { |
118 | .sta_id = mvm_sta->sta_id, | |
119 | .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), | |
120 | .add_modify = update ? 1 : 0, | |
121 | .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | | |
122 | STA_FLG_MIMO_EN_MSK), | |
cf0cda19 | 123 | .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), |
4b8265ab | 124 | }; |
8ca151b5 JB |
125 | int ret; |
126 | u32 status; | |
127 | u32 agg_size = 0, mpdu_dens = 0; | |
128 | ||
7a453973 JB |
129 | if (!update) { |
130 | add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
131 | memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); | |
132 | } | |
5bc5aaad JB |
133 | |
134 | switch (sta->bandwidth) { | |
135 | case IEEE80211_STA_RX_BW_160: | |
136 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); | |
137 | /* fall through */ | |
138 | case IEEE80211_STA_RX_BW_80: | |
139 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); | |
140 | /* fall through */ | |
141 | case IEEE80211_STA_RX_BW_40: | |
142 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); | |
143 | /* fall through */ | |
144 | case IEEE80211_STA_RX_BW_20: | |
145 | if (sta->ht_cap.ht_supported) | |
146 | add_sta_cmd.station_flags |= | |
147 | cpu_to_le32(STA_FLG_FAT_EN_20MHZ); | |
148 | break; | |
149 | } | |
150 | ||
151 | switch (sta->rx_nss) { | |
152 | case 1: | |
153 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
154 | break; | |
155 | case 2: | |
156 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); | |
157 | break; | |
158 | case 3 ... 8: | |
159 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); | |
160 | break; | |
161 | } | |
162 | ||
163 | switch (sta->smps_mode) { | |
164 | case IEEE80211_SMPS_AUTOMATIC: | |
165 | case IEEE80211_SMPS_NUM_MODES: | |
166 | WARN_ON(1); | |
167 | break; | |
168 | case IEEE80211_SMPS_STATIC: | |
169 | /* override NSS */ | |
170 | add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); | |
171 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
172 | break; | |
173 | case IEEE80211_SMPS_DYNAMIC: | |
174 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); | |
175 | break; | |
176 | case IEEE80211_SMPS_OFF: | |
177 | /* nothing */ | |
178 | break; | |
179 | } | |
8ca151b5 JB |
180 | |
181 | if (sta->ht_cap.ht_supported) { | |
182 | add_sta_cmd.station_flags_msk |= | |
183 | cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | | |
184 | STA_FLG_AGG_MPDU_DENS_MSK); | |
185 | ||
186 | mpdu_dens = sta->ht_cap.ampdu_density; | |
187 | } | |
188 | ||
189 | if (sta->vht_cap.vht_supported) { | |
190 | agg_size = sta->vht_cap.cap & | |
191 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; | |
192 | agg_size >>= | |
193 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; | |
194 | } else if (sta->ht_cap.ht_supported) { | |
195 | agg_size = sta->ht_cap.ampdu_factor; | |
196 | } | |
197 | ||
198 | add_sta_cmd.station_flags |= | |
199 | cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); | |
200 | add_sta_cmd.station_flags |= | |
201 | cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); | |
202 | ||
203 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
204 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
205 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 206 | &add_sta_cmd, &status); |
8ca151b5 JB |
207 | if (ret) |
208 | return ret; | |
209 | ||
837c4da9 | 210 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
211 | case ADD_STA_SUCCESS: |
212 | IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); | |
213 | break; | |
214 | default: | |
215 | ret = -EIO; | |
216 | IWL_ERR(mvm, "ADD_STA failed\n"); | |
217 | break; | |
218 | } | |
219 | ||
220 | return ret; | |
221 | } | |
222 | ||
a0f6bf2a AN |
223 | static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm, |
224 | struct ieee80211_sta *sta) | |
225 | { | |
226 | unsigned long used_hw_queues; | |
227 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
5d42e7b2 EG |
228 | unsigned int wdg_timeout = |
229 | iwl_mvm_get_wd_timeout(mvm, NULL, true, false); | |
a0f6bf2a AN |
230 | u32 ac; |
231 | ||
232 | lockdep_assert_held(&mvm->mutex); | |
233 | ||
234 | used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL); | |
235 | ||
236 | /* Find available queues, and allocate them to the ACs */ | |
237 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
238 | u8 queue = find_first_zero_bit(&used_hw_queues, | |
239 | mvm->first_agg_queue); | |
240 | ||
241 | if (queue >= mvm->first_agg_queue) { | |
242 | IWL_ERR(mvm, "Failed to allocate STA queue\n"); | |
243 | return -EBUSY; | |
244 | } | |
245 | ||
246 | __set_bit(queue, &used_hw_queues); | |
247 | mvmsta->hw_queue[ac] = queue; | |
248 | } | |
249 | ||
250 | /* Found a place for all queues - enable them */ | |
251 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
252 | iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac], | |
4ecafae9 | 253 | mvmsta->hw_queue[ac], |
5c1156ef LK |
254 | iwl_mvm_ac_to_tx_fifo[ac], 0, |
255 | wdg_timeout); | |
a0f6bf2a AN |
256 | mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]); |
257 | } | |
258 | ||
259 | return 0; | |
260 | } | |
261 | ||
262 | static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm, | |
263 | struct ieee80211_sta *sta) | |
264 | { | |
265 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
266 | unsigned long sta_msk; | |
267 | int i; | |
268 | ||
269 | lockdep_assert_held(&mvm->mutex); | |
270 | ||
271 | /* disable the TDLS STA-specific queues */ | |
272 | sta_msk = mvmsta->tfd_queue_msk; | |
a4ca3ed4 | 273 | for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE) |
06ecdba3 | 274 | iwl_mvm_disable_txq(mvm, i, i, IWL_MAX_TID_COUNT, 0); |
a0f6bf2a AN |
275 | } |
276 | ||
8ca151b5 JB |
277 | int iwl_mvm_add_sta(struct iwl_mvm *mvm, |
278 | struct ieee80211_vif *vif, | |
279 | struct ieee80211_sta *sta) | |
280 | { | |
281 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 282 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
a571f5f6 | 283 | struct iwl_mvm_rxq_dup_data *dup_data; |
8ca151b5 JB |
284 | int i, ret, sta_id; |
285 | ||
286 | lockdep_assert_held(&mvm->mutex); | |
287 | ||
288 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) | |
b92e661b EP |
289 | sta_id = iwl_mvm_find_free_sta_id(mvm, |
290 | ieee80211_vif_type_p2p(vif)); | |
8ca151b5 JB |
291 | else |
292 | sta_id = mvm_sta->sta_id; | |
293 | ||
36f4631c | 294 | if (sta_id == IWL_MVM_STATION_COUNT) |
8ca151b5 JB |
295 | return -ENOSPC; |
296 | ||
297 | spin_lock_init(&mvm_sta->lock); | |
298 | ||
299 | mvm_sta->sta_id = sta_id; | |
300 | mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, | |
301 | mvmvif->color); | |
302 | mvm_sta->vif = vif; | |
303 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
9ee718aa EL |
304 | mvm_sta->tx_protection = 0; |
305 | mvm_sta->tt_tx_protection = false; | |
8ca151b5 JB |
306 | |
307 | /* HW restart, don't assume the memory has been zeroed */ | |
e3d4bc8c | 308 | atomic_set(&mvm->pending_frames[sta_id], 0); |
69191afe | 309 | mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ |
8ca151b5 | 310 | mvm_sta->tfd_queue_msk = 0; |
a0f6bf2a AN |
311 | |
312 | /* allocate new queues for a TDLS station */ | |
313 | if (sta->tdls) { | |
314 | ret = iwl_mvm_tdls_sta_init(mvm, sta); | |
315 | if (ret) | |
316 | return ret; | |
317 | } else { | |
318 | for (i = 0; i < IEEE80211_NUM_ACS; i++) | |
319 | if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) | |
320 | mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); | |
321 | } | |
8ca151b5 | 322 | |
6d9d32b8 JB |
323 | /* for HW restart - reset everything but the sequence number */ |
324 | for (i = 0; i < IWL_MAX_TID_COUNT; i++) { | |
325 | u16 seq = mvm_sta->tid_data[i].seq_number; | |
326 | memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); | |
327 | mvm_sta->tid_data[i].seq_number = seq; | |
328 | } | |
efed6640 | 329 | mvm_sta->agg_tids = 0; |
8ca151b5 | 330 | |
a571f5f6 SS |
331 | if (iwl_mvm_has_new_rx_api(mvm) && |
332 | !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
333 | dup_data = kcalloc(mvm->trans->num_rx_queues, | |
334 | sizeof(*dup_data), | |
335 | GFP_KERNEL); | |
336 | if (!dup_data) | |
337 | return -ENOMEM; | |
338 | mvm_sta->dup_data = dup_data; | |
339 | } | |
340 | ||
7a453973 | 341 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, false); |
8ca151b5 | 342 | if (ret) |
a0f6bf2a | 343 | goto err; |
8ca151b5 | 344 | |
9e848010 JB |
345 | if (vif->type == NL80211_IFTYPE_STATION) { |
346 | if (!sta->tdls) { | |
347 | WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); | |
348 | mvmvif->ap_sta_id = sta_id; | |
349 | } else { | |
350 | WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); | |
351 | } | |
352 | } | |
8ca151b5 JB |
353 | |
354 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); | |
355 | ||
356 | return 0; | |
a0f6bf2a AN |
357 | |
358 | err: | |
359 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
360 | return ret; | |
8ca151b5 JB |
361 | } |
362 | ||
7a453973 JB |
363 | int iwl_mvm_update_sta(struct iwl_mvm *mvm, |
364 | struct ieee80211_vif *vif, | |
365 | struct ieee80211_sta *sta) | |
366 | { | |
367 | return iwl_mvm_sta_send_to_fw(mvm, sta, true); | |
368 | } | |
369 | ||
8ca151b5 JB |
370 | int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, |
371 | bool drain) | |
372 | { | |
f9dc0004 | 373 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
374 | int ret; |
375 | u32 status; | |
376 | ||
377 | lockdep_assert_held(&mvm->mutex); | |
378 | ||
379 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
380 | cmd.sta_id = mvmsta->sta_id; | |
381 | cmd.add_modify = STA_MODE_MODIFY; | |
382 | cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; | |
383 | cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); | |
384 | ||
385 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
386 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
387 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 388 | &cmd, &status); |
8ca151b5 JB |
389 | if (ret) |
390 | return ret; | |
391 | ||
837c4da9 | 392 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
393 | case ADD_STA_SUCCESS: |
394 | IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", | |
395 | mvmsta->sta_id); | |
396 | break; | |
397 | default: | |
398 | ret = -EIO; | |
399 | IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", | |
400 | mvmsta->sta_id); | |
401 | break; | |
402 | } | |
403 | ||
404 | return ret; | |
405 | } | |
406 | ||
407 | /* | |
408 | * Remove a station from the FW table. Before sending the command to remove | |
409 | * the station validate that the station is indeed known to the driver (sanity | |
410 | * only). | |
411 | */ | |
412 | static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) | |
413 | { | |
414 | struct ieee80211_sta *sta; | |
415 | struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { | |
416 | .sta_id = sta_id, | |
417 | }; | |
418 | int ret; | |
419 | ||
420 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
421 | lockdep_is_held(&mvm->mutex)); | |
422 | ||
423 | /* Note: internal stations are marked as error values */ | |
424 | if (!sta) { | |
425 | IWL_ERR(mvm, "Invalid station id\n"); | |
426 | return -EINVAL; | |
427 | } | |
428 | ||
a1022927 | 429 | ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, |
8ca151b5 JB |
430 | sizeof(rm_sta_cmd), &rm_sta_cmd); |
431 | if (ret) { | |
432 | IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); | |
433 | return ret; | |
434 | } | |
435 | ||
436 | return 0; | |
437 | } | |
438 | ||
439 | void iwl_mvm_sta_drained_wk(struct work_struct *wk) | |
440 | { | |
441 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); | |
442 | u8 sta_id; | |
443 | ||
444 | /* | |
445 | * The mutex is needed because of the SYNC cmd, but not only: if the | |
446 | * work would run concurrently with iwl_mvm_rm_sta, it would run before | |
447 | * iwl_mvm_rm_sta sets the station as busy, and exit. Then | |
448 | * iwl_mvm_rm_sta would set the station as busy, and nobody will clean | |
449 | * that later. | |
450 | */ | |
451 | mutex_lock(&mvm->mutex); | |
452 | ||
453 | for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { | |
454 | int ret; | |
455 | struct ieee80211_sta *sta = | |
456 | rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
457 | lockdep_is_held(&mvm->mutex)); | |
458 | ||
1ddbbb0c JB |
459 | /* |
460 | * This station is in use or RCU-removed; the latter happens in | |
461 | * managed mode, where mac80211 removes the station before we | |
462 | * can remove it from firmware (we can only do that after the | |
463 | * MAC is marked unassociated), and possibly while the deauth | |
464 | * frame to disconnect from the AP is still queued. Then, the | |
465 | * station pointer is -ENOENT when the last skb is reclaimed. | |
466 | */ | |
467 | if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) | |
8ca151b5 JB |
468 | continue; |
469 | ||
470 | if (PTR_ERR(sta) == -EINVAL) { | |
471 | IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", | |
472 | sta_id); | |
473 | continue; | |
474 | } | |
475 | ||
476 | if (!sta) { | |
477 | IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", | |
478 | sta_id); | |
479 | continue; | |
480 | } | |
481 | ||
482 | WARN_ON(PTR_ERR(sta) != -EBUSY); | |
483 | /* This station was removed and we waited until it got drained, | |
484 | * we can now proceed and remove it. | |
485 | */ | |
486 | ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
487 | if (ret) { | |
488 | IWL_ERR(mvm, | |
489 | "Couldn't remove sta %d after it was drained\n", | |
490 | sta_id); | |
491 | continue; | |
492 | } | |
c531c771 | 493 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 | 494 | clear_bit(sta_id, mvm->sta_drained); |
a0f6bf2a AN |
495 | |
496 | if (mvm->tfd_drained[sta_id]) { | |
497 | unsigned long i, msk = mvm->tfd_drained[sta_id]; | |
498 | ||
a4ca3ed4 | 499 | for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) |
06ecdba3 AN |
500 | iwl_mvm_disable_txq(mvm, i, i, |
501 | IWL_MAX_TID_COUNT, 0); | |
a0f6bf2a AN |
502 | |
503 | mvm->tfd_drained[sta_id] = 0; | |
504 | IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", | |
505 | sta_id, msk); | |
506 | } | |
8ca151b5 JB |
507 | } |
508 | ||
509 | mutex_unlock(&mvm->mutex); | |
510 | } | |
511 | ||
512 | int iwl_mvm_rm_sta(struct iwl_mvm *mvm, | |
513 | struct ieee80211_vif *vif, | |
514 | struct ieee80211_sta *sta) | |
515 | { | |
516 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 517 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
518 | int ret; |
519 | ||
520 | lockdep_assert_held(&mvm->mutex); | |
521 | ||
a571f5f6 SS |
522 | if (iwl_mvm_has_new_rx_api(mvm)) |
523 | kfree(mvm_sta->dup_data); | |
524 | ||
8ca151b5 JB |
525 | if (vif->type == NL80211_IFTYPE_STATION && |
526 | mvmvif->ap_sta_id == mvm_sta->sta_id) { | |
fe92e32a EG |
527 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
528 | if (ret) | |
529 | return ret; | |
80d85655 | 530 | /* flush its queues here since we are freeing mvm_sta */ |
5888a40c | 531 | ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, 0); |
fe92e32a EG |
532 | if (ret) |
533 | return ret; | |
534 | ret = iwl_trans_wait_tx_queue_empty(mvm->trans, | |
535 | mvm_sta->tfd_queue_msk); | |
536 | if (ret) | |
537 | return ret; | |
538 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); | |
80d85655 | 539 | |
8ca151b5 JB |
540 | /* if we are associated - we can't remove the AP STA now */ |
541 | if (vif->bss_conf.assoc) | |
542 | return ret; | |
543 | ||
544 | /* unassoc - go ahead - remove the AP STA now */ | |
545 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
37577fe2 EP |
546 | |
547 | /* clear d0i3_ap_sta_id if no longer relevant */ | |
548 | if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) | |
549 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
8ca151b5 JB |
550 | } |
551 | ||
1d3c3f63 AN |
552 | /* |
553 | * This shouldn't happen - the TDLS channel switch should be canceled | |
554 | * before the STA is removed. | |
555 | */ | |
556 | if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { | |
557 | mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; | |
558 | cancel_delayed_work(&mvm->tdls_cs.dwork); | |
559 | } | |
560 | ||
e3d4bc8c EG |
561 | /* |
562 | * Make sure that the tx response code sees the station as -EBUSY and | |
563 | * calls the drain worker. | |
564 | */ | |
565 | spin_lock_bh(&mvm_sta->lock); | |
8ca151b5 JB |
566 | /* |
567 | * There are frames pending on the AC queues for this station. | |
568 | * We need to wait until all the frames are drained... | |
569 | */ | |
e3d4bc8c | 570 | if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { |
8ca151b5 JB |
571 | rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], |
572 | ERR_PTR(-EBUSY)); | |
e3d4bc8c | 573 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
574 | |
575 | /* disable TDLS sta queues on drain complete */ | |
576 | if (sta->tdls) { | |
577 | mvm->tfd_drained[mvm_sta->sta_id] = | |
578 | mvm_sta->tfd_queue_msk; | |
579 | IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", | |
580 | mvm_sta->sta_id); | |
581 | } | |
582 | ||
e3d4bc8c | 583 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
8ca151b5 | 584 | } else { |
e3d4bc8c | 585 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
586 | |
587 | if (sta->tdls) | |
588 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
589 | ||
8ca151b5 | 590 | ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); |
c531c771 | 591 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); |
8ca151b5 JB |
592 | } |
593 | ||
594 | return ret; | |
595 | } | |
596 | ||
597 | int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, | |
598 | struct ieee80211_vif *vif, | |
599 | u8 sta_id) | |
600 | { | |
601 | int ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
602 | ||
603 | lockdep_assert_held(&mvm->mutex); | |
604 | ||
c531c771 | 605 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 JB |
606 | return ret; |
607 | } | |
608 | ||
0e39eb03 CRI |
609 | int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, |
610 | struct iwl_mvm_int_sta *sta, | |
611 | u32 qmask, enum nl80211_iftype iftype) | |
8ca151b5 JB |
612 | { |
613 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
b92e661b | 614 | sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); |
8ca151b5 JB |
615 | if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) |
616 | return -ENOSPC; | |
617 | } | |
618 | ||
619 | sta->tfd_queue_msk = qmask; | |
620 | ||
621 | /* put a non-NULL value so iterating over the stations won't stop */ | |
622 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); | |
623 | return 0; | |
624 | } | |
625 | ||
712b24ad JB |
626 | static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, |
627 | struct iwl_mvm_int_sta *sta) | |
8ca151b5 | 628 | { |
c531c771 | 629 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); |
8ca151b5 JB |
630 | memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); |
631 | sta->sta_id = IWL_MVM_STATION_COUNT; | |
632 | } | |
633 | ||
634 | static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, | |
635 | struct iwl_mvm_int_sta *sta, | |
636 | const u8 *addr, | |
637 | u16 mac_id, u16 color) | |
638 | { | |
f9dc0004 | 639 | struct iwl_mvm_add_sta_cmd cmd; |
8ca151b5 JB |
640 | int ret; |
641 | u32 status; | |
642 | ||
643 | lockdep_assert_held(&mvm->mutex); | |
644 | ||
f9dc0004 | 645 | memset(&cmd, 0, sizeof(cmd)); |
8ca151b5 JB |
646 | cmd.sta_id = sta->sta_id; |
647 | cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, | |
648 | color)); | |
649 | ||
650 | cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); | |
cf0cda19 | 651 | cmd.tid_disable_tx = cpu_to_le16(0xffff); |
8ca151b5 JB |
652 | |
653 | if (addr) | |
654 | memcpy(cmd.addr, addr, ETH_ALEN); | |
655 | ||
854c5705 SS |
656 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
657 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 658 | &cmd, &status); |
8ca151b5 JB |
659 | if (ret) |
660 | return ret; | |
661 | ||
837c4da9 | 662 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
663 | case ADD_STA_SUCCESS: |
664 | IWL_DEBUG_INFO(mvm, "Internal station added.\n"); | |
665 | return 0; | |
666 | default: | |
667 | ret = -EIO; | |
668 | IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", | |
669 | status); | |
670 | break; | |
671 | } | |
672 | return ret; | |
673 | } | |
674 | ||
675 | int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) | |
676 | { | |
4cf677fd EG |
677 | unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? |
678 | mvm->cfg->base_params->wd_timeout : | |
679 | IWL_WATCHDOG_DISABLED; | |
8ca151b5 JB |
680 | int ret; |
681 | ||
682 | lockdep_assert_held(&mvm->mutex); | |
683 | ||
7da91b0e | 684 | /* Map Aux queue to fifo - needs to happen before adding Aux station */ |
4ecafae9 | 685 | iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, mvm->aux_queue, |
5c1156ef | 686 | IWL_MVM_TX_FIFO_MCAST, 0, wdg_timeout); |
7da91b0e AM |
687 | |
688 | /* Allocate aux station and assign to it the aux queue */ | |
689 | ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), | |
b92e661b | 690 | NL80211_IFTYPE_UNSPECIFIED); |
8ca151b5 JB |
691 | if (ret) |
692 | return ret; | |
693 | ||
694 | ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, | |
695 | MAC_INDEX_AUX, 0); | |
696 | ||
697 | if (ret) | |
698 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
699 | return ret; | |
700 | } | |
701 | ||
0e39eb03 CRI |
702 | int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
703 | { | |
704 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
705 | ||
706 | lockdep_assert_held(&mvm->mutex); | |
707 | return iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, | |
708 | mvmvif->id, 0); | |
709 | } | |
710 | ||
711 | int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
712 | { | |
713 | int ret; | |
714 | ||
715 | lockdep_assert_held(&mvm->mutex); | |
716 | ||
717 | ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); | |
718 | if (ret) | |
719 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
720 | ||
721 | return ret; | |
722 | } | |
723 | ||
724 | void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) | |
725 | { | |
726 | iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); | |
727 | } | |
728 | ||
712b24ad JB |
729 | void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) |
730 | { | |
731 | lockdep_assert_held(&mvm->mutex); | |
732 | ||
733 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
734 | } | |
735 | ||
8ca151b5 JB |
736 | /* |
737 | * Send the add station command for the vif's broadcast station. | |
738 | * Assumes that the station was already allocated. | |
739 | * | |
740 | * @mvm: the mvm component | |
741 | * @vif: the interface to which the broadcast station is added | |
742 | * @bsta: the broadcast station to add. | |
743 | */ | |
013290aa | 744 | int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
745 | { |
746 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 747 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
5023d966 | 748 | static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
a4243402 | 749 | const u8 *baddr = _baddr; |
8ca151b5 JB |
750 | |
751 | lockdep_assert_held(&mvm->mutex); | |
752 | ||
5023d966 JB |
753 | if (vif->type == NL80211_IFTYPE_ADHOC) |
754 | baddr = vif->bss_conf.bssid; | |
755 | ||
8ca151b5 JB |
756 | if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) |
757 | return -ENOSPC; | |
758 | ||
759 | return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, | |
760 | mvmvif->id, mvmvif->color); | |
761 | } | |
762 | ||
763 | /* Send the FW a request to remove the station from it's internal data | |
764 | * structures, but DO NOT remove the entry from the local data structures. */ | |
013290aa | 765 | int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 | 766 | { |
013290aa | 767 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
768 | int ret; |
769 | ||
770 | lockdep_assert_held(&mvm->mutex); | |
771 | ||
013290aa | 772 | ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); |
8ca151b5 JB |
773 | if (ret) |
774 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
775 | return ret; | |
776 | } | |
777 | ||
013290aa JB |
778 | int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
779 | { | |
780 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
781 | u32 qmask; | |
782 | ||
783 | lockdep_assert_held(&mvm->mutex); | |
784 | ||
d92b732e | 785 | qmask = iwl_mvm_mac_get_queues_mask(vif); |
013290aa JB |
786 | |
787 | /* | |
788 | * The firmware defines the TFD queue mask to only be relevant | |
789 | * for *unicast* queues, so the multicast (CAB) queue shouldn't | |
790 | * be included. | |
791 | */ | |
792 | if (vif->type == NL80211_IFTYPE_AP) | |
793 | qmask &= ~BIT(vif->cab_queue); | |
794 | ||
795 | return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, | |
796 | ieee80211_vif_type_p2p(vif)); | |
797 | } | |
798 | ||
8ca151b5 JB |
799 | /* Allocate a new station entry for the broadcast station to the given vif, |
800 | * and send it to the FW. | |
801 | * Note that each P2P mac should have its own broadcast station. | |
802 | * | |
803 | * @mvm: the mvm component | |
804 | * @vif: the interface to which the broadcast station is added | |
805 | * @bsta: the broadcast station to add. */ | |
013290aa | 806 | int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
807 | { |
808 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 809 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
8ca151b5 JB |
810 | int ret; |
811 | ||
812 | lockdep_assert_held(&mvm->mutex); | |
813 | ||
013290aa | 814 | ret = iwl_mvm_alloc_bcast_sta(mvm, vif); |
8ca151b5 JB |
815 | if (ret) |
816 | return ret; | |
817 | ||
013290aa | 818 | ret = iwl_mvm_send_add_bcast_sta(mvm, vif); |
8ca151b5 JB |
819 | |
820 | if (ret) | |
821 | iwl_mvm_dealloc_int_sta(mvm, bsta); | |
013290aa | 822 | |
8ca151b5 JB |
823 | return ret; |
824 | } | |
825 | ||
013290aa JB |
826 | void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
827 | { | |
828 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
829 | ||
830 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
831 | } | |
832 | ||
8ca151b5 JB |
833 | /* |
834 | * Send the FW a request to remove the station from it's internal data | |
835 | * structures, and in addition remove it from the local data structure. | |
836 | */ | |
013290aa | 837 | int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
838 | { |
839 | int ret; | |
840 | ||
841 | lockdep_assert_held(&mvm->mutex); | |
842 | ||
013290aa JB |
843 | ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); |
844 | ||
845 | iwl_mvm_dealloc_bcast_sta(mvm, vif); | |
8ca151b5 | 846 | |
8ca151b5 JB |
847 | return ret; |
848 | } | |
849 | ||
113a0447 EG |
850 | #define IWL_MAX_RX_BA_SESSIONS 16 |
851 | ||
8ca151b5 | 852 | int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
854c5705 | 853 | int tid, u16 ssn, bool start, u8 buf_size) |
8ca151b5 | 854 | { |
9d8ce6af | 855 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 856 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
857 | int ret; |
858 | u32 status; | |
859 | ||
860 | lockdep_assert_held(&mvm->mutex); | |
861 | ||
113a0447 EG |
862 | if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { |
863 | IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); | |
864 | return -ENOSPC; | |
865 | } | |
866 | ||
8ca151b5 JB |
867 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
868 | cmd.sta_id = mvm_sta->sta_id; | |
869 | cmd.add_modify = STA_MODE_MODIFY; | |
93a42667 EG |
870 | if (start) { |
871 | cmd.add_immediate_ba_tid = (u8) tid; | |
872 | cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
854c5705 | 873 | cmd.rx_ba_window = cpu_to_le16((u16)buf_size); |
93a42667 EG |
874 | } else { |
875 | cmd.remove_immediate_ba_tid = (u8) tid; | |
876 | } | |
8ca151b5 JB |
877 | cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : |
878 | STA_MODIFY_REMOVE_BA_TID; | |
879 | ||
880 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
881 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
882 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 883 | &cmd, &status); |
8ca151b5 JB |
884 | if (ret) |
885 | return ret; | |
886 | ||
837c4da9 | 887 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
888 | case ADD_STA_SUCCESS: |
889 | IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", | |
890 | start ? "start" : "stopp"); | |
891 | break; | |
892 | case ADD_STA_IMMEDIATE_BA_FAILURE: | |
893 | IWL_WARN(mvm, "RX BA Session refused by fw\n"); | |
894 | ret = -ENOSPC; | |
895 | break; | |
896 | default: | |
897 | ret = -EIO; | |
898 | IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", | |
899 | start ? "start" : "stopp", status); | |
900 | break; | |
901 | } | |
902 | ||
113a0447 EG |
903 | if (!ret) { |
904 | if (start) | |
905 | mvm->rx_ba_sessions++; | |
906 | else if (mvm->rx_ba_sessions > 0) | |
907 | /* check that restart flow didn't zero the counter */ | |
908 | mvm->rx_ba_sessions--; | |
909 | } | |
910 | ||
8ca151b5 JB |
911 | return ret; |
912 | } | |
913 | ||
914 | static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
915 | int tid, u8 queue, bool start) | |
916 | { | |
9d8ce6af | 917 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 918 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
919 | int ret; |
920 | u32 status; | |
921 | ||
922 | lockdep_assert_held(&mvm->mutex); | |
923 | ||
924 | if (start) { | |
925 | mvm_sta->tfd_queue_msk |= BIT(queue); | |
926 | mvm_sta->tid_disable_agg &= ~BIT(tid); | |
927 | } else { | |
928 | mvm_sta->tfd_queue_msk &= ~BIT(queue); | |
929 | mvm_sta->tid_disable_agg |= BIT(tid); | |
930 | } | |
931 | ||
932 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); | |
933 | cmd.sta_id = mvm_sta->sta_id; | |
934 | cmd.add_modify = STA_MODE_MODIFY; | |
935 | cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; | |
936 | cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
937 | cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); | |
938 | ||
939 | status = ADD_STA_SUCCESS; | |
854c5705 SS |
940 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, |
941 | iwl_mvm_add_sta_cmd_size(mvm), | |
f9dc0004 | 942 | &cmd, &status); |
8ca151b5 JB |
943 | if (ret) |
944 | return ret; | |
945 | ||
837c4da9 | 946 | switch (status & IWL_ADD_STA_STATUS_MASK) { |
8ca151b5 JB |
947 | case ADD_STA_SUCCESS: |
948 | break; | |
949 | default: | |
950 | ret = -EIO; | |
951 | IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", | |
952 | start ? "start" : "stopp", status); | |
953 | break; | |
954 | } | |
955 | ||
956 | return ret; | |
957 | } | |
958 | ||
b797e3fb | 959 | const u8 tid_to_mac80211_ac[] = { |
8ca151b5 JB |
960 | IEEE80211_AC_BE, |
961 | IEEE80211_AC_BK, | |
962 | IEEE80211_AC_BK, | |
963 | IEEE80211_AC_BE, | |
964 | IEEE80211_AC_VI, | |
965 | IEEE80211_AC_VI, | |
966 | IEEE80211_AC_VO, | |
967 | IEEE80211_AC_VO, | |
968 | }; | |
969 | ||
3e56eadf JB |
970 | static const u8 tid_to_ucode_ac[] = { |
971 | AC_BE, | |
972 | AC_BK, | |
973 | AC_BK, | |
974 | AC_BE, | |
975 | AC_VI, | |
976 | AC_VI, | |
977 | AC_VO, | |
978 | AC_VO, | |
979 | }; | |
980 | ||
8ca151b5 JB |
981 | int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
982 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) | |
983 | { | |
5b577a90 | 984 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
985 | struct iwl_mvm_tid_data *tid_data; |
986 | int txq_id; | |
4ecafae9 | 987 | int ret; |
8ca151b5 JB |
988 | |
989 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
990 | return -EINVAL; | |
991 | ||
992 | if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { | |
993 | IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", | |
994 | mvmsta->tid_data[tid].state); | |
995 | return -ENXIO; | |
996 | } | |
997 | ||
998 | lockdep_assert_held(&mvm->mutex); | |
999 | ||
b2492501 AN |
1000 | spin_lock_bh(&mvmsta->lock); |
1001 | ||
1002 | /* possible race condition - we entered D0i3 while starting agg */ | |
1003 | if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { | |
1004 | spin_unlock_bh(&mvmsta->lock); | |
1005 | IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); | |
1006 | return -EIO; | |
1007 | } | |
1008 | ||
4ecafae9 LK |
1009 | spin_lock_bh(&mvm->queue_info_lock); |
1010 | ||
1011 | txq_id = iwl_mvm_find_free_queue(mvm, mvm->first_agg_queue, | |
1012 | mvm->last_agg_queue); | |
1013 | if (txq_id < 0) { | |
1014 | ret = txq_id; | |
1015 | spin_unlock_bh(&mvm->queue_info_lock); | |
1016 | IWL_ERR(mvm, "Failed to allocate agg queue\n"); | |
1017 | goto release_locks; | |
1018 | } | |
1019 | mvm->queue_info[txq_id].setup_reserved = true; | |
1020 | spin_unlock_bh(&mvm->queue_info_lock); | |
8ca151b5 | 1021 | |
8ca151b5 | 1022 | tid_data = &mvmsta->tid_data[tid]; |
9a886586 | 1023 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1024 | tid_data->txq_id = txq_id; |
1025 | *ssn = tid_data->ssn; | |
1026 | ||
1027 | IWL_DEBUG_TX_QUEUES(mvm, | |
1028 | "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", | |
1029 | mvmsta->sta_id, tid, txq_id, tid_data->ssn, | |
1030 | tid_data->next_reclaimed); | |
1031 | ||
1032 | if (tid_data->ssn == tid_data->next_reclaimed) { | |
1033 | tid_data->state = IWL_AGG_STARTING; | |
1034 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1035 | } else { | |
1036 | tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
1037 | } | |
1038 | ||
4ecafae9 LK |
1039 | ret = 0; |
1040 | ||
1041 | release_locks: | |
8ca151b5 JB |
1042 | spin_unlock_bh(&mvmsta->lock); |
1043 | ||
4ecafae9 | 1044 | return ret; |
8ca151b5 JB |
1045 | } |
1046 | ||
1047 | int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
bb81bb68 EG |
1048 | struct ieee80211_sta *sta, u16 tid, u8 buf_size, |
1049 | bool amsdu) | |
8ca151b5 | 1050 | { |
5b577a90 | 1051 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 1052 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
5d42e7b2 EG |
1053 | unsigned int wdg_timeout = |
1054 | iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); | |
8ca151b5 JB |
1055 | int queue, fifo, ret; |
1056 | u16 ssn; | |
1057 | ||
efed6640 ES |
1058 | BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) |
1059 | != IWL_MAX_TID_COUNT); | |
1060 | ||
8ca151b5 JB |
1061 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); |
1062 | ||
1063 | spin_lock_bh(&mvmsta->lock); | |
1064 | ssn = tid_data->ssn; | |
1065 | queue = tid_data->txq_id; | |
1066 | tid_data->state = IWL_AGG_ON; | |
efed6640 | 1067 | mvmsta->agg_tids |= BIT(tid); |
8ca151b5 | 1068 | tid_data->ssn = 0xffff; |
bb81bb68 | 1069 | tid_data->amsdu_in_ampdu_allowed = amsdu; |
8ca151b5 JB |
1070 | spin_unlock_bh(&mvmsta->lock); |
1071 | ||
3e56eadf | 1072 | fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; |
8ca151b5 | 1073 | |
4ecafae9 LK |
1074 | iwl_mvm_enable_agg_txq(mvm, queue, |
1075 | vif->hw_queue[tid_to_mac80211_ac[tid]], fifo, | |
1076 | mvmsta->sta_id, tid, buf_size, ssn, wdg_timeout); | |
fa7878e7 | 1077 | |
8ca151b5 JB |
1078 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); |
1079 | if (ret) | |
1080 | return -EIO; | |
1081 | ||
4ecafae9 LK |
1082 | /* No need to mark as reserved */ |
1083 | spin_lock_bh(&mvm->queue_info_lock); | |
1084 | mvm->queue_info[queue].setup_reserved = false; | |
1085 | spin_unlock_bh(&mvm->queue_info_lock); | |
1086 | ||
8ca151b5 JB |
1087 | /* |
1088 | * Even though in theory the peer could have different | |
1089 | * aggregation reorder buffer sizes for different sessions, | |
1090 | * our ucode doesn't allow for that and has a global limit | |
1091 | * for each station. Therefore, use the minimum of all the | |
1092 | * aggregation sessions and our default value. | |
1093 | */ | |
1094 | mvmsta->max_agg_bufsize = | |
1095 | min(mvmsta->max_agg_bufsize, buf_size); | |
1096 | mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; | |
1097 | ||
9ee718aa EL |
1098 | IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", |
1099 | sta->addr, tid); | |
1100 | ||
9e680946 | 1101 | return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); |
8ca151b5 JB |
1102 | } |
1103 | ||
1104 | int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1105 | struct ieee80211_sta *sta, u16 tid) | |
1106 | { | |
5b577a90 | 1107 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1108 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1109 | u16 txq_id; | |
1110 | int err; | |
1111 | ||
f9aa8dd3 EG |
1112 | |
1113 | /* | |
1114 | * If mac80211 is cleaning its state, then say that we finished since | |
1115 | * our state has been cleared anyway. | |
1116 | */ | |
1117 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
1118 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1119 | return 0; | |
1120 | } | |
1121 | ||
8ca151b5 JB |
1122 | spin_lock_bh(&mvmsta->lock); |
1123 | ||
1124 | txq_id = tid_data->txq_id; | |
1125 | ||
1126 | IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", | |
1127 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
1128 | ||
efed6640 ES |
1129 | mvmsta->agg_tids &= ~BIT(tid); |
1130 | ||
4ecafae9 LK |
1131 | /* No need to mark as reserved anymore */ |
1132 | spin_lock_bh(&mvm->queue_info_lock); | |
1133 | mvm->queue_info[txq_id].setup_reserved = false; | |
1134 | spin_unlock_bh(&mvm->queue_info_lock); | |
1135 | ||
8ca151b5 JB |
1136 | switch (tid_data->state) { |
1137 | case IWL_AGG_ON: | |
9a886586 | 1138 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1139 | |
1140 | IWL_DEBUG_TX_QUEUES(mvm, | |
1141 | "ssn = %d, next_recl = %d\n", | |
1142 | tid_data->ssn, tid_data->next_reclaimed); | |
1143 | ||
1144 | /* There are still packets for this RA / TID in the HW */ | |
1145 | if (tid_data->ssn != tid_data->next_reclaimed) { | |
1146 | tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; | |
1147 | err = 0; | |
1148 | break; | |
1149 | } | |
1150 | ||
1151 | tid_data->ssn = 0xffff; | |
f7f89e7b | 1152 | tid_data->state = IWL_AGG_OFF; |
f7f89e7b JB |
1153 | spin_unlock_bh(&mvmsta->lock); |
1154 | ||
1155 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1156 | ||
1157 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); | |
1158 | ||
4ecafae9 LK |
1159 | iwl_mvm_disable_txq(mvm, txq_id, |
1160 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1161 | 0); | |
f7f89e7b | 1162 | return 0; |
8ca151b5 JB |
1163 | case IWL_AGG_STARTING: |
1164 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
1165 | /* | |
1166 | * The agg session has been stopped before it was set up. This | |
1167 | * can happen when the AddBA timer times out for example. | |
1168 | */ | |
1169 | ||
1170 | /* No barriers since we are under mutex */ | |
1171 | lockdep_assert_held(&mvm->mutex); | |
8ca151b5 JB |
1172 | |
1173 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1174 | tid_data->state = IWL_AGG_OFF; | |
1175 | err = 0; | |
1176 | break; | |
1177 | default: | |
1178 | IWL_ERR(mvm, | |
1179 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
1180 | mvmsta->sta_id, tid, tid_data->state); | |
1181 | IWL_ERR(mvm, | |
1182 | "\ttid_data->txq_id = %d\n", tid_data->txq_id); | |
1183 | err = -EINVAL; | |
1184 | } | |
1185 | ||
1186 | spin_unlock_bh(&mvmsta->lock); | |
1187 | ||
1188 | return err; | |
1189 | } | |
1190 | ||
e3d9e7ce EG |
1191 | int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1192 | struct ieee80211_sta *sta, u16 tid) | |
1193 | { | |
5b577a90 | 1194 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
e3d9e7ce EG |
1195 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1196 | u16 txq_id; | |
b6658ff8 | 1197 | enum iwl_mvm_agg_state old_state; |
e3d9e7ce EG |
1198 | |
1199 | /* | |
1200 | * First set the agg state to OFF to avoid calling | |
1201 | * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. | |
1202 | */ | |
1203 | spin_lock_bh(&mvmsta->lock); | |
1204 | txq_id = tid_data->txq_id; | |
1205 | IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", | |
1206 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
b6658ff8 | 1207 | old_state = tid_data->state; |
e3d9e7ce | 1208 | tid_data->state = IWL_AGG_OFF; |
efed6640 | 1209 | mvmsta->agg_tids &= ~BIT(tid); |
e3d9e7ce EG |
1210 | spin_unlock_bh(&mvmsta->lock); |
1211 | ||
4ecafae9 LK |
1212 | /* No need to mark as reserved */ |
1213 | spin_lock_bh(&mvm->queue_info_lock); | |
1214 | mvm->queue_info[txq_id].setup_reserved = false; | |
1215 | spin_unlock_bh(&mvm->queue_info_lock); | |
1216 | ||
b6658ff8 | 1217 | if (old_state >= IWL_AGG_ON) { |
fe92e32a | 1218 | iwl_mvm_drain_sta(mvm, mvmsta, true); |
5888a40c | 1219 | if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) |
b6658ff8 | 1220 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); |
fe92e32a EG |
1221 | iwl_trans_wait_tx_queue_empty(mvm->trans, |
1222 | mvmsta->tfd_queue_msk); | |
1223 | iwl_mvm_drain_sta(mvm, mvmsta, false); | |
b6658ff8 | 1224 | |
f7f89e7b JB |
1225 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); |
1226 | ||
4ecafae9 LK |
1227 | iwl_mvm_disable_txq(mvm, tid_data->txq_id, |
1228 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1229 | 0); | |
b6658ff8 | 1230 | } |
e3d9e7ce | 1231 | |
e3d9e7ce EG |
1232 | return 0; |
1233 | } | |
1234 | ||
8ca151b5 JB |
1235 | static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) |
1236 | { | |
2dc2a15e | 1237 | int i, max = -1, max_offs = -1; |
8ca151b5 JB |
1238 | |
1239 | lockdep_assert_held(&mvm->mutex); | |
1240 | ||
2dc2a15e JB |
1241 | /* Pick the unused key offset with the highest 'deleted' |
1242 | * counter. Every time a key is deleted, all the counters | |
1243 | * are incremented and the one that was just deleted is | |
1244 | * reset to zero. Thus, the highest counter is the one | |
1245 | * that was deleted longest ago. Pick that one. | |
1246 | */ | |
1247 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1248 | if (test_bit(i, mvm->fw_key_table)) | |
1249 | continue; | |
1250 | if (mvm->fw_key_deleted[i] > max) { | |
1251 | max = mvm->fw_key_deleted[i]; | |
1252 | max_offs = i; | |
1253 | } | |
1254 | } | |
8ca151b5 | 1255 | |
2dc2a15e | 1256 | if (max_offs < 0) |
8ca151b5 JB |
1257 | return STA_KEY_IDX_INVALID; |
1258 | ||
2dc2a15e | 1259 | return max_offs; |
8ca151b5 JB |
1260 | } |
1261 | ||
5f7a1847 JB |
1262 | static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, |
1263 | struct ieee80211_vif *vif, | |
1264 | struct ieee80211_sta *sta) | |
8ca151b5 | 1265 | { |
5b530e95 | 1266 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 | 1267 | |
5f7a1847 JB |
1268 | if (sta) |
1269 | return iwl_mvm_sta_from_mac80211(sta); | |
8ca151b5 JB |
1270 | |
1271 | /* | |
1272 | * The device expects GTKs for station interfaces to be | |
1273 | * installed as GTKs for the AP station. If we have no | |
1274 | * station ID, then use AP's station ID. | |
1275 | */ | |
1276 | if (vif->type == NL80211_IFTYPE_STATION && | |
9513c5e1 AA |
1277 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { |
1278 | u8 sta_id = mvmvif->ap_sta_id; | |
1279 | ||
45854360 JB |
1280 | sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], |
1281 | lockdep_is_held(&mvm->mutex)); | |
9513c5e1 AA |
1282 | /* |
1283 | * It is possible that the 'sta' parameter is NULL, | |
1284 | * for example when a GTK is removed - the sta_id will then | |
1285 | * be the AP ID, and no station was passed by mac80211. | |
1286 | */ | |
1287 | if (IS_ERR_OR_NULL(sta)) | |
5f7a1847 | 1288 | return NULL; |
9513c5e1 | 1289 | |
5f7a1847 | 1290 | return iwl_mvm_sta_from_mac80211(sta); |
9513c5e1 | 1291 | } |
8ca151b5 | 1292 | |
5f7a1847 | 1293 | return NULL; |
8ca151b5 JB |
1294 | } |
1295 | ||
1296 | static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, | |
1297 | struct iwl_mvm_sta *mvm_sta, | |
ba3943b0 | 1298 | struct ieee80211_key_conf *keyconf, bool mcast, |
d6ee54a9 LC |
1299 | u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, |
1300 | u8 key_offset) | |
8ca151b5 | 1301 | { |
5a258aae | 1302 | struct iwl_mvm_add_sta_key_cmd cmd = {}; |
f9dc0004 | 1303 | __le16 key_flags; |
79920749 JB |
1304 | int ret; |
1305 | u32 status; | |
8ca151b5 JB |
1306 | u16 keyidx; |
1307 | int i; | |
2f6319d1 | 1308 | u8 sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1309 | |
1310 | keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1311 | STA_KEY_FLG_KEYID_MSK; | |
1312 | key_flags = cpu_to_le16(keyidx); | |
1313 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); | |
1314 | ||
1315 | switch (keyconf->cipher) { | |
1316 | case WLAN_CIPHER_SUITE_TKIP: | |
1317 | key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); | |
5a258aae | 1318 | cmd.tkip_rx_tsc_byte2 = tkip_iv32; |
8ca151b5 | 1319 | for (i = 0; i < 5; i++) |
5a258aae MS |
1320 | cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); |
1321 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1322 | break; |
1323 | case WLAN_CIPHER_SUITE_CCMP: | |
1324 | key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); | |
5a258aae | 1325 | memcpy(cmd.key, keyconf->key, keyconf->keylen); |
8ca151b5 | 1326 | break; |
ba3943b0 JB |
1327 | case WLAN_CIPHER_SUITE_WEP104: |
1328 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); | |
aa0cb08b | 1329 | /* fall through */ |
ba3943b0 JB |
1330 | case WLAN_CIPHER_SUITE_WEP40: |
1331 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); | |
1332 | memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); | |
1333 | break; | |
8ca151b5 | 1334 | default: |
e36e5433 MS |
1335 | key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); |
1336 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1337 | } |
1338 | ||
ba3943b0 | 1339 | if (mcast) |
8ca151b5 JB |
1340 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1341 | ||
d6ee54a9 | 1342 | cmd.key_offset = key_offset; |
5a258aae | 1343 | cmd.key_flags = key_flags; |
8ca151b5 JB |
1344 | cmd.sta_id = sta_id; |
1345 | ||
1346 | status = ADD_STA_SUCCESS; | |
a1022927 | 1347 | if (cmd_flags & CMD_ASYNC) |
f9dc0004 EG |
1348 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, |
1349 | sizeof(cmd), &cmd); | |
a1022927 EG |
1350 | else |
1351 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1352 | &cmd, &status); | |
8ca151b5 JB |
1353 | |
1354 | switch (status) { | |
1355 | case ADD_STA_SUCCESS: | |
1356 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); | |
1357 | break; | |
1358 | default: | |
1359 | ret = -EIO; | |
1360 | IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); | |
1361 | break; | |
1362 | } | |
1363 | ||
1364 | return ret; | |
1365 | } | |
1366 | ||
1367 | static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, | |
1368 | struct ieee80211_key_conf *keyconf, | |
1369 | u8 sta_id, bool remove_key) | |
1370 | { | |
1371 | struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; | |
1372 | ||
1373 | /* verify the key details match the required command's expectations */ | |
1374 | if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || | |
1375 | (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || | |
1376 | (keyconf->keyidx != 4 && keyconf->keyidx != 5))) | |
1377 | return -EINVAL; | |
1378 | ||
1379 | igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); | |
1380 | igtk_cmd.sta_id = cpu_to_le32(sta_id); | |
1381 | ||
1382 | if (remove_key) { | |
1383 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); | |
1384 | } else { | |
1385 | struct ieee80211_key_seq seq; | |
1386 | const u8 *pn; | |
1387 | ||
1388 | memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1389 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); |
1390 | pn = seq.aes_cmac.pn; | |
1391 | igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | | |
1392 | ((u64) pn[4] << 8) | | |
1393 | ((u64) pn[3] << 16) | | |
1394 | ((u64) pn[2] << 24) | | |
1395 | ((u64) pn[1] << 32) | | |
1396 | ((u64) pn[0] << 40)); | |
1397 | } | |
1398 | ||
1399 | IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", | |
1400 | remove_key ? "removing" : "installing", | |
1401 | igtk_cmd.sta_id); | |
1402 | ||
a1022927 | 1403 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
8ca151b5 JB |
1404 | sizeof(igtk_cmd), &igtk_cmd); |
1405 | } | |
1406 | ||
1407 | ||
1408 | static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, | |
1409 | struct ieee80211_vif *vif, | |
1410 | struct ieee80211_sta *sta) | |
1411 | { | |
5b530e95 | 1412 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1413 | |
1414 | if (sta) | |
1415 | return sta->addr; | |
1416 | ||
1417 | if (vif->type == NL80211_IFTYPE_STATION && | |
1418 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { | |
1419 | u8 sta_id = mvmvif->ap_sta_id; | |
1420 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1421 | lockdep_is_held(&mvm->mutex)); | |
1422 | return sta->addr; | |
1423 | } | |
1424 | ||
1425 | ||
1426 | return NULL; | |
1427 | } | |
1428 | ||
2f6319d1 JB |
1429 | static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1430 | struct ieee80211_vif *vif, | |
1431 | struct ieee80211_sta *sta, | |
ba3943b0 | 1432 | struct ieee80211_key_conf *keyconf, |
d6ee54a9 | 1433 | u8 key_offset, |
ba3943b0 | 1434 | bool mcast) |
2f6319d1 JB |
1435 | { |
1436 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1437 | int ret; | |
1438 | const u8 *addr; | |
1439 | struct ieee80211_key_seq seq; | |
1440 | u16 p1k[5]; | |
1441 | ||
1442 | switch (keyconf->cipher) { | |
1443 | case WLAN_CIPHER_SUITE_TKIP: | |
1444 | addr = iwl_mvm_get_mac_addr(mvm, vif, sta); | |
1445 | /* get phase 1 key from mac80211 */ | |
1446 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1447 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
ba3943b0 | 1448 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1449 | seq.tkip.iv32, p1k, 0, key_offset); |
2f6319d1 JB |
1450 | break; |
1451 | case WLAN_CIPHER_SUITE_CCMP: | |
ba3943b0 JB |
1452 | case WLAN_CIPHER_SUITE_WEP40: |
1453 | case WLAN_CIPHER_SUITE_WEP104: | |
1454 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, | |
d6ee54a9 | 1455 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
1456 | break; |
1457 | default: | |
ba3943b0 | 1458 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1459 | 0, NULL, 0, key_offset); |
2f6319d1 JB |
1460 | } |
1461 | ||
1462 | return ret; | |
1463 | } | |
1464 | ||
1465 | static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, | |
ba3943b0 JB |
1466 | struct ieee80211_key_conf *keyconf, |
1467 | bool mcast) | |
2f6319d1 JB |
1468 | { |
1469 | struct iwl_mvm_add_sta_key_cmd cmd = {}; | |
1470 | __le16 key_flags; | |
1471 | int ret; | |
1472 | u32 status; | |
1473 | ||
1474 | key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1475 | STA_KEY_FLG_KEYID_MSK); | |
1476 | key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); | |
1477 | key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); | |
1478 | ||
ba3943b0 | 1479 | if (mcast) |
2f6319d1 JB |
1480 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1481 | ||
1482 | cmd.key_flags = key_flags; | |
1483 | cmd.key_offset = keyconf->hw_key_idx; | |
1484 | cmd.sta_id = sta_id; | |
1485 | ||
1486 | status = ADD_STA_SUCCESS; | |
1487 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1488 | &cmd, &status); | |
1489 | ||
1490 | switch (status) { | |
1491 | case ADD_STA_SUCCESS: | |
1492 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); | |
1493 | break; | |
1494 | default: | |
1495 | ret = -EIO; | |
1496 | IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); | |
1497 | break; | |
1498 | } | |
1499 | ||
1500 | return ret; | |
1501 | } | |
1502 | ||
8ca151b5 JB |
1503 | int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1504 | struct ieee80211_vif *vif, | |
1505 | struct ieee80211_sta *sta, | |
1506 | struct ieee80211_key_conf *keyconf, | |
d6ee54a9 | 1507 | u8 key_offset) |
8ca151b5 | 1508 | { |
ba3943b0 | 1509 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 | 1510 | struct iwl_mvm_sta *mvm_sta; |
2f6319d1 | 1511 | u8 sta_id; |
8ca151b5 | 1512 | int ret; |
11828dbc | 1513 | static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; |
8ca151b5 JB |
1514 | |
1515 | lockdep_assert_held(&mvm->mutex); | |
1516 | ||
1517 | /* Get the station id from the mvm local station table */ | |
5f7a1847 JB |
1518 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
1519 | if (!mvm_sta) { | |
1520 | IWL_ERR(mvm, "Failed to find station\n"); | |
8ca151b5 JB |
1521 | return -EINVAL; |
1522 | } | |
5f7a1847 | 1523 | sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1524 | |
1525 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { | |
1526 | ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); | |
1527 | goto end; | |
1528 | } | |
1529 | ||
1530 | /* | |
1531 | * It is possible that the 'sta' parameter is NULL, and thus | |
1532 | * there is a need to retrieve the sta from the local station table. | |
1533 | */ | |
1534 | if (!sta) { | |
1535 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1536 | lockdep_is_held(&mvm->mutex)); | |
1537 | if (IS_ERR_OR_NULL(sta)) { | |
1538 | IWL_ERR(mvm, "Invalid station id\n"); | |
1539 | return -EINVAL; | |
1540 | } | |
1541 | } | |
1542 | ||
2f6319d1 | 1543 | if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
8ca151b5 JB |
1544 | return -EINVAL; |
1545 | ||
d6ee54a9 LC |
1546 | /* If the key_offset is not pre-assigned, we need to find a |
1547 | * new offset to use. In normal cases, the offset is not | |
1548 | * pre-assigned, but during HW_RESTART we want to reuse the | |
1549 | * same indices, so we pass them when this function is called. | |
1550 | * | |
1551 | * In D3 entry, we need to hardcoded the indices (because the | |
1552 | * firmware hardcodes the PTK offset to 0). In this case, we | |
1553 | * need to make sure we don't overwrite the hw_key_idx in the | |
1554 | * keyconf structure, because otherwise we cannot configure | |
1555 | * the original ones back when resuming. | |
1556 | */ | |
1557 | if (key_offset == STA_KEY_IDX_INVALID) { | |
1558 | key_offset = iwl_mvm_set_fw_key_idx(mvm); | |
1559 | if (key_offset == STA_KEY_IDX_INVALID) | |
8ca151b5 | 1560 | return -ENOSPC; |
d6ee54a9 | 1561 | keyconf->hw_key_idx = key_offset; |
8ca151b5 JB |
1562 | } |
1563 | ||
d6ee54a9 | 1564 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); |
9c3deeb5 | 1565 | if (ret) |
ba3943b0 | 1566 | goto end; |
ba3943b0 JB |
1567 | |
1568 | /* | |
1569 | * For WEP, the same key is used for multicast and unicast. Upload it | |
1570 | * again, using the same key offset, and now pointing the other one | |
1571 | * to the same key slot (offset). | |
1572 | * If this fails, remove the original as well. | |
1573 | */ | |
1574 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1575 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { | |
d6ee54a9 LC |
1576 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, |
1577 | key_offset, !mcast); | |
ba3943b0 | 1578 | if (ret) { |
ba3943b0 | 1579 | __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
9c3deeb5 | 1580 | goto end; |
ba3943b0 JB |
1581 | } |
1582 | } | |
8ca151b5 | 1583 | |
9c3deeb5 LC |
1584 | __set_bit(key_offset, mvm->fw_key_table); |
1585 | ||
8ca151b5 JB |
1586 | end: |
1587 | IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
1588 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, | |
11828dbc | 1589 | sta ? sta->addr : zero_addr, ret); |
8ca151b5 JB |
1590 | return ret; |
1591 | } | |
1592 | ||
1593 | int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, | |
1594 | struct ieee80211_vif *vif, | |
1595 | struct ieee80211_sta *sta, | |
1596 | struct ieee80211_key_conf *keyconf) | |
1597 | { | |
ba3943b0 | 1598 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
5f7a1847 JB |
1599 | struct iwl_mvm_sta *mvm_sta; |
1600 | u8 sta_id = IWL_MVM_STATION_COUNT; | |
2dc2a15e | 1601 | int ret, i; |
8ca151b5 JB |
1602 | |
1603 | lockdep_assert_held(&mvm->mutex); | |
1604 | ||
5f7a1847 JB |
1605 | /* Get the station from the mvm local station table */ |
1606 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); | |
8ca151b5 JB |
1607 | |
1608 | IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", | |
1609 | keyconf->keyidx, sta_id); | |
1610 | ||
1611 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) | |
1612 | return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); | |
1613 | ||
2f6319d1 | 1614 | if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { |
8ca151b5 JB |
1615 | IWL_ERR(mvm, "offset %d not used in fw key table.\n", |
1616 | keyconf->hw_key_idx); | |
1617 | return -ENOENT; | |
1618 | } | |
1619 | ||
2dc2a15e JB |
1620 | /* track which key was deleted last */ |
1621 | for (i = 0; i < STA_KEY_MAX_NUM; i++) { | |
1622 | if (mvm->fw_key_deleted[i] < U8_MAX) | |
1623 | mvm->fw_key_deleted[i]++; | |
1624 | } | |
1625 | mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; | |
1626 | ||
5f7a1847 | 1627 | if (!mvm_sta) { |
8ca151b5 JB |
1628 | IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); |
1629 | return 0; | |
1630 | } | |
1631 | ||
5f7a1847 JB |
1632 | sta_id = mvm_sta->sta_id; |
1633 | ||
ba3943b0 JB |
1634 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
1635 | if (ret) | |
1636 | return ret; | |
1637 | ||
1638 | /* delete WEP key twice to get rid of (now useless) offset */ | |
1639 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1640 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) | |
1641 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); | |
1642 | ||
1643 | return ret; | |
8ca151b5 JB |
1644 | } |
1645 | ||
1646 | void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, | |
1647 | struct ieee80211_vif *vif, | |
1648 | struct ieee80211_key_conf *keyconf, | |
1649 | struct ieee80211_sta *sta, u32 iv32, | |
1650 | u16 *phase1key) | |
1651 | { | |
c3eb536a | 1652 | struct iwl_mvm_sta *mvm_sta; |
ba3943b0 | 1653 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 1654 | |
c3eb536a BL |
1655 | rcu_read_lock(); |
1656 | ||
5f7a1847 JB |
1657 | mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); |
1658 | if (WARN_ON_ONCE(!mvm_sta)) | |
45854360 | 1659 | goto unlock; |
ba3943b0 | 1660 | iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
d6ee54a9 | 1661 | iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx); |
45854360 JB |
1662 | |
1663 | unlock: | |
c3eb536a | 1664 | rcu_read_unlock(); |
8ca151b5 JB |
1665 | } |
1666 | ||
9cc40712 JB |
1667 | void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, |
1668 | struct ieee80211_sta *sta) | |
8ca151b5 | 1669 | { |
5b577a90 | 1670 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1671 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1672 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1673 | .sta_id = mvmsta->sta_id, |
5af01772 | 1674 | .station_flags_msk = cpu_to_le32(STA_FLG_PS), |
9cc40712 | 1675 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 JB |
1676 | }; |
1677 | int ret; | |
1678 | ||
854c5705 SS |
1679 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
1680 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
8ca151b5 JB |
1681 | if (ret) |
1682 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1683 | } | |
1684 | ||
9cc40712 JB |
1685 | void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, |
1686 | struct ieee80211_sta *sta, | |
8ca151b5 | 1687 | enum ieee80211_frame_release_type reason, |
3e56eadf JB |
1688 | u16 cnt, u16 tids, bool more_data, |
1689 | bool agg) | |
8ca151b5 | 1690 | { |
5b577a90 | 1691 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1692 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1693 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1694 | .sta_id = mvmsta->sta_id, |
8ca151b5 JB |
1695 | .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, |
1696 | .sleep_tx_count = cpu_to_le16(cnt), | |
9cc40712 | 1697 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 | 1698 | }; |
3e56eadf JB |
1699 | int tid, ret; |
1700 | unsigned long _tids = tids; | |
1701 | ||
1702 | /* convert TIDs to ACs - we don't support TSPEC so that's OK | |
1703 | * Note that this field is reserved and unused by firmware not | |
1704 | * supporting GO uAPSD, so it's safe to always do this. | |
1705 | */ | |
1706 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) | |
1707 | cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); | |
1708 | ||
1709 | /* If we're releasing frames from aggregation queues then check if the | |
1710 | * all queues combined that we're releasing frames from have | |
1711 | * - more frames than the service period, in which case more_data | |
1712 | * needs to be set | |
1713 | * - fewer than 'cnt' frames, in which case we need to adjust the | |
1714 | * firmware command (but do that unconditionally) | |
1715 | */ | |
1716 | if (agg) { | |
1717 | int remaining = cnt; | |
36be0eb6 | 1718 | int sleep_tx_count; |
3e56eadf JB |
1719 | |
1720 | spin_lock_bh(&mvmsta->lock); | |
1721 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { | |
1722 | struct iwl_mvm_tid_data *tid_data; | |
1723 | u16 n_queued; | |
1724 | ||
1725 | tid_data = &mvmsta->tid_data[tid]; | |
1726 | if (WARN(tid_data->state != IWL_AGG_ON && | |
1727 | tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, | |
1728 | "TID %d state is %d\n", | |
1729 | tid, tid_data->state)) { | |
1730 | spin_unlock_bh(&mvmsta->lock); | |
1731 | ieee80211_sta_eosp(sta); | |
1732 | return; | |
1733 | } | |
1734 | ||
1735 | n_queued = iwl_mvm_tid_queued(tid_data); | |
1736 | if (n_queued > remaining) { | |
1737 | more_data = true; | |
1738 | remaining = 0; | |
1739 | break; | |
1740 | } | |
1741 | remaining -= n_queued; | |
1742 | } | |
36be0eb6 EG |
1743 | sleep_tx_count = cnt - remaining; |
1744 | if (reason == IEEE80211_FRAME_RELEASE_UAPSD) | |
1745 | mvmsta->sleep_tx_count = sleep_tx_count; | |
3e56eadf JB |
1746 | spin_unlock_bh(&mvmsta->lock); |
1747 | ||
36be0eb6 | 1748 | cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); |
3e56eadf JB |
1749 | if (WARN_ON(cnt - remaining == 0)) { |
1750 | ieee80211_sta_eosp(sta); | |
1751 | return; | |
1752 | } | |
1753 | } | |
1754 | ||
1755 | /* Note: this is ignored by firmware not supporting GO uAPSD */ | |
1756 | if (more_data) | |
1757 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); | |
1758 | ||
1759 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { | |
1760 | mvmsta->next_status_eosp = true; | |
1761 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); | |
1762 | } else { | |
1763 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); | |
1764 | } | |
8ca151b5 | 1765 | |
156f92f2 EG |
1766 | /* block the Tx queues until the FW updated the sleep Tx count */ |
1767 | iwl_trans_block_txq_ptrs(mvm->trans, true); | |
1768 | ||
1769 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, | |
1770 | CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, | |
854c5705 | 1771 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); |
8ca151b5 JB |
1772 | if (ret) |
1773 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1774 | } | |
3e56eadf | 1775 | |
0416841d JB |
1776 | void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, |
1777 | struct iwl_rx_cmd_buffer *rxb) | |
3e56eadf JB |
1778 | { |
1779 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1780 | struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; | |
1781 | struct ieee80211_sta *sta; | |
1782 | u32 sta_id = le32_to_cpu(notif->sta_id); | |
1783 | ||
1784 | if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) | |
0416841d | 1785 | return; |
3e56eadf JB |
1786 | |
1787 | rcu_read_lock(); | |
1788 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1789 | if (!IS_ERR_OR_NULL(sta)) | |
1790 | ieee80211_sta_eosp(sta); | |
1791 | rcu_read_unlock(); | |
3e56eadf | 1792 | } |
09b0ce1a AO |
1793 | |
1794 | void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, | |
1795 | struct iwl_mvm_sta *mvmsta, bool disable) | |
1796 | { | |
1797 | struct iwl_mvm_add_sta_cmd cmd = { | |
1798 | .add_modify = STA_MODE_MODIFY, | |
1799 | .sta_id = mvmsta->sta_id, | |
1800 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
1801 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
1802 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), | |
1803 | }; | |
1804 | int ret; | |
1805 | ||
854c5705 SS |
1806 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, |
1807 | iwl_mvm_add_sta_cmd_size(mvm), &cmd); | |
09b0ce1a AO |
1808 | if (ret) |
1809 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1810 | } | |
003e5236 AO |
1811 | |
1812 | void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, | |
1813 | struct ieee80211_sta *sta, | |
1814 | bool disable) | |
1815 | { | |
1816 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1817 | ||
1818 | spin_lock_bh(&mvm_sta->lock); | |
1819 | ||
1820 | if (mvm_sta->disable_tx == disable) { | |
1821 | spin_unlock_bh(&mvm_sta->lock); | |
1822 | return; | |
1823 | } | |
1824 | ||
1825 | mvm_sta->disable_tx = disable; | |
1826 | ||
1827 | /* | |
0d365ae5 SS |
1828 | * Tell mac80211 to start/stop queuing tx for this station, |
1829 | * but don't stop queuing if there are still pending frames | |
003e5236 AO |
1830 | * for this station. |
1831 | */ | |
1832 | if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) | |
1833 | ieee80211_sta_block_awake(mvm->hw, sta, disable); | |
1834 | ||
1835 | iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); | |
1836 | ||
1837 | spin_unlock_bh(&mvm_sta->lock); | |
1838 | } | |
1839 | ||
1840 | void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, | |
1841 | struct iwl_mvm_vif *mvmvif, | |
1842 | bool disable) | |
1843 | { | |
1844 | struct ieee80211_sta *sta; | |
1845 | struct iwl_mvm_sta *mvm_sta; | |
1846 | int i; | |
1847 | ||
1848 | lockdep_assert_held(&mvm->mutex); | |
1849 | ||
1850 | /* Block/unblock all the stations of the given mvmvif */ | |
1851 | for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { | |
1852 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], | |
1853 | lockdep_is_held(&mvm->mutex)); | |
1854 | if (IS_ERR_OR_NULL(sta)) | |
1855 | continue; | |
1856 | ||
1857 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1858 | if (mvm_sta->mac_id_n_color != | |
1859 | FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) | |
1860 | continue; | |
1861 | ||
1862 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); | |
1863 | } | |
1864 | } | |
dc88b4ba LC |
1865 | |
1866 | void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1867 | { | |
1868 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1869 | struct iwl_mvm_sta *mvmsta; | |
1870 | ||
1871 | rcu_read_lock(); | |
1872 | ||
1873 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); | |
1874 | ||
1875 | if (!WARN_ON(!mvmsta)) | |
1876 | iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); | |
1877 | ||
1878 | rcu_read_unlock(); | |
1879 | } |